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Abstract
Hand tremor induced by industrial exposure to inorganic mercury vapor was studied during recovery in two women patients, Subjects were instructed to maintain a force with the forefinger between two limits (10 to 40 gm). Performance progressively improved after the cessation of exposure, and were asymptomatic in about 3.5 months. The dispersion of the amplitude distribution decreased, and percent time within the specified limits increased. Power spectral analyses revealed a marked reduction in power associated with a change in the shape of the spectra. These changes were associated with a reduction in plasma levels of mercury.
